Murphy TTDJ-DC-T User Manual

TTDJ-99062N page 1 of 8
TTDJ Series Fully-Configurable Fault Annunciator
Installation and Operations Manual
TTDJ-99062N
Revised 04-04
Section 50
(00-02-0412)
Description
The TTDJ is a solid-state fault annunciator and shutdown control system,
with hour meter, designed to protect engines, compressors and their associ-
ated equipment. Four TTDJ modules are available:
TTDJ-DC :
Powered by 12 or 24 VDC systems without tachome-
ter and overspeed sensing. Includes RS485 serial port.
TTDJ-DC-T : Powered by 12 or 24 VDC systems with internal
tachometer and overspeed sensing. Includes RS485 serial port.
TTDJ-IGN : Powered by negative ground CD ignition systems
without tachometer and overspeed sensing. Without RS485 port.
TTDJ-IGN-T :
Powered by negative ground CD ignition systems
with internal tachometer/overspeed sensing.Without RS485 port.
All TTDJ models will accept 32 sensor inputs from normally open and/or
normally closed sensors. Each of the first 16 inputs can be configured for
Shutdown or Alarm Before Shutdown
* , and can be locked out by one of
the Two Start-Run timers (B1:0-5 min.; B2:0-9:59 min.), or configured as
Class C. The annunciator provides for both closing of a fuel valve, and
grounding of an ignition after a time delay. The TTDJ has built-in Elapsed
Time Meter. Run Hours and Tachometer Settings are stored in non-
volatile memory, as well as the last 4 shutdowns and one alarm (alarm
only stored if active at the time of shutdown). The TTDJ liquid crystal
display annunciates any fault from the sensor inputs, displays engine
speed and elapsed time.
Other features for all TTDJ models are: built-in Test Mode to test the sensor
circuits without shutting down, on-board backup battery to retain the fault
display after shutdown (IGN models only), and a history of the last 4 shut-
downs with their associated Run Hours, also stored in non-volatile memory.
TTDJ-DC and TTDJ-DC-T models feature an RS485 serial communications
port (MODBUS RTU slave) to interface with micro-controllers, PC’S,
PLC’s and controllers.
Module/ Head
The module is the brain of the control system. It contains the microcom-
puter, the Liquid Crystal Display (LCD), the membrane keys for configur-
ing the sensors inputs, the Sensor Inputs Terminal Blocks and the Power
Inputs and Control Output Terminal Block. The TTDJ-DC module also
includes an RS485 serial communications port (MODBUS RTU slave).
Liquid
Crystal Display
The Liquid Crystal Display sequentially provides shutdown/alarm
condition, run hours, rpm, and timer information. A shutdown or
alarm condition is indicated by the appropriate sensor number in
the first two leftmost digits. Hours display uses all the digits. RPM
display is shown in the rightmost digits with a Run Indicator in the first
digit. The Timer display shows the timer number in the first digit and the
time in the last three digits.
T
imers
Active Timers are indicated by the timer number in the first digit of the dis-
play, and the remaining time in the last three digits. Timer 1= Class “B1”,
Timer 2= Class “B2”, Timer 3= Test, Timer 4= Ignition Ground Delay.
Power and Control Inputs/Outputs
The TTDJ power and control inputs and outputs are connected to the
Power Inputs terminal block on the back of the TTDJ.
In the TTDJ-IGN and TTDJ-IGN-T the FV+ output is a non-switched out-
put that supplies stored energy from an internal capacitor. -FV and
ALARM outputs are non reversible switched outputs (switched OFF for
normal operation, switched ON for alarm and shutdown). When a shut-
down fault is detected, the -FV and ALARM turn ON and after a time
delay, the IGN input switches to ground. The alarm output does not
operate for Manual Stop (code 52).
On the TTDJ-DC and TTDJ-DC-T the IGN, FV, and ALARM outputs
are programmed to switch ON for normal operation.
Sensor Inputs and Terminals
Up to 32 dry contact sensor inputs or Murphy device transistor outputs
can be connected to the back of the TTDJ via a terminal block (32 pair,
screw type, each with a jumper). Sensor inputs 1 to 16 are configurable as
Class“A”, Class “B1”, Class “B2” or Class “C” functions, Shutdown or
Alarm Before Shutdown * . The Class“B” timers allow sensor inputs to be
locked out at start-up. Sensor inputs configured for Alarm Only will cause
the Alarm Output to turn on when tripped, and the sensor number will be
annunciated while the unit continues to run. TTDJ sensor inputs 17-28 are
dedicated as Class “A” Shutdown only. Sensor input 29 can be configured as a
Class “A”, or Class “ESD” input. Sensor input 32 is dedicated as Class “ESD”.
Sensor inputs 30 & 31 can have special functions or be Class “A”. Any
tripped sensor is detected within 1 second after faulted.
Please read the following information before installing. This installation information is intended for all TTDJ Series models.
A visual inspection of this product before installation for any damage during shipping is recommended.
GENERAL INFORMATION
WARNING
BEFORE BEGINNING INSTALLATION OF THIS MURPHY PRODUCT
✔ Disconnect all electrical power to the machine.
✔ Make sure the machine cannot operate during installation.
✔ Follow all safety warnings of the machine manufacturer.
✔ Read and follow all installation instructions.
CSA Certified for Use in Class I, Div. 2,
Groups C and D Hazardous Areas.
US Patent 6,144,116
(model TTDJ-IGN-T only)
C US
* Alarm Before Shutdown is a function that causes annunciation and the alarm output, but will not cause a shutdown.

Murphy TTDJ-DC-T Specifications

General

Brand	Murphy
Model	TTDJ-DC-T
Category	Security System
Language	English

Summary

General Information and System Overview

TTDJ Product Description

Overview of the TTDJ as a solid-state fault annunciator and shutdown control system for engines and compressors.

Liquid Crystal Display (LCD) Functionality

Explains how the LCD displays shutdown/alarm conditions, run hours, RPM, and timer information.

TTDJ Timers

Details the active timers available in the TTDJ system, including Class B1, B2, Test, and Ignition Ground Delay.

Power and Control Inputs/Outputs

Describes how power and control signals are connected to the TTDJ's terminal blocks.

Sensor Inputs and Terminals

Explains the configuration options and types of sensor inputs supported by the TTDJ up to 32 inputs.

Module/Head Components

Describes the physical module, including the LCD, membrane keys, and terminal blocks.

Emergency Shutdown Configuration

Details the dedicated sensor input (32) for emergency shutdown and its override capabilities.

Remote Reset Operation

Explains the optional remote reset feature and how to activate it via a closed contact.

Remote Lockout Functionality

Describes the optional remote lockout feature that inhibits Class B1 and B2 Lockout timers.

Reset Key Function

Explains how the Reset key clears faults and initiates Class 'B' timers.

Overspeed Shutdown (-T Models)

Details the overspeed shutdown feature for -T models, which bypasses ignition ground delay.

Underspeed Annunciation (-T Models)

Describes the underspeed annunciation for -T models when engine speed falls below setpoint.

Loss of Ignition Annunciation (Non -T Models)

Explains how loss of ignition is annunciated on non -T TTDJ models.

Manual Stop Key Operation

Details the function of the Manual Run/Stop key for system shutdown.

Low Backup Battery Warning (-IGN Models)

Indicates the 'Lowbatt' display for -IGN models when the backup battery needs replacement.

Timer 'O' Key Function

Explains how the Timer 'O' key zeros current timers or exits Test mode.

Test Key and Test Mode

Describes how to initiate and perform a sensor test using the Test key.

Shutdown History Logging

Information about the storage of the last 4 shutdown codes and any associated alarms.

Class 'B' Lockout Timer Function

Explains how Class 'B1' and 'B2' sensor inputs are locked out until their timers expire.

Class 'C' Sensor Functions

Details the behavior of Class 'C' sensor functions, including initial fault and arming.

Ignition Ground Delay

Describes the selectable delay from 0-20 seconds for grounding the ignition.

Hourmeter Operation

Explains how the internal hourmeter tracks and displays run hours.

RS485 Serial Port (TTDJ-DC Models)

Details the RS485 serial port for interfacing with micro-controllers, PCs, and SCADA systems.

Modbus Integer Holding Registers

Lists Modbus registers for accessing TTDJ data like RPM, hours, and input/output status.

RS485 Typical Connections

Illustrates standard wiring configurations for RS485 communication.

Specifications and Technical Data

Power Input Voltage Ranges

Specifies the operating voltage requirements for TTDJ-DC and TTDJ-IGN models.

Sensor Input Specifications

Details the number and configurability of sensor inputs (1-16, 17-28, 29-32).

Output Ratings

Specifies the voltage and current ratings for the TTDJ outputs.

Communication Port Details

Notes the availability of an RS485 serial port on TTDJ-DC models.

Operating Temperature Range

Specifies the acceptable operating temperature range for the TTDJ device.

Storage Temperature Range

Specifies the acceptable storage temperature range for the TTDJ device.

Sensor Scan Rate

Indicates the maximum time for sensor scan rate, within 1 second.

Start/Run Timer Ranges

Specifies the adjustable ranges for B1 (0-5 min) and B2 (0-9:59 min) timers.

Tachometer Calibration Range

Details the range for pulses per revolution for tachometer calibration.

Overspeed and Underspeed Setpoints

Specifies the settable limits for overspeed (0-9999 rpm) and underspeed (0-5000 rpm).

Magnetic Pickup Specifications

Lists the voltage and frequency specifications for magnetic pickup sensors.

On-Board Backup Power Details

Information on the 6 VDC backup battery for -IGN versions.

Tachometer Accuracy

States the accuracy of the tachometer function, ±0.5% or ±1 RPM.

Hourmeter Range and Accuracy

Specifies the hourmeter range (0-65535 hrs) and accuracy (±15 min/year).

TTDJ Mounting Dimensions and Installation

Mounting Requirements

Details the required square mounting hole size and screw locations for panel mounting.

Critical Mounting Safety Warning

Emphasizes performing mounting operations only with the power source OFF.

Battery Replacement Procedure (-IGN Models)

Critical Battery Replacement Safety Warning

Extreme caution required for battery replacement, especially in Class I, Div. 2 hazardous areas.

Step-by-Step Battery Replacement

Instructions for safely accessing and replacing the backup battery.

Typical Wiring Diagrams

Hazardous Location Wiring Compliance Warning

Mandates installation according to NEC Class I, Div. 2, Groups C & D and wire separation.

TTDJ-DC and TTDJ-DC-T Wiring Diagram

Illustrates typical wiring connections for TTDJ-DC and TTDJ-DC-T models.

TTDJ-IGN and TTDJ-IGN-T Wiring Diagram

Illustrates typical wiring connections for TTDJ-IGN and TTDJ-IGN-T models.

Wiring Notes and Considerations

Important notes regarding sensor wiring, non-incendive circuits, and output ratings.

Sensor Setup Configuration

TTDJ Sensor Setup Map Overview

Provides a map for configuring sensor inputs 1-16 with various types and classes.

Sensor Input Type Definitions

Defines sensor types 0-7, including Class A/B1/B2/C Shutdown and Alarm Before Shutdown.

Key Navigation Note for Setup Maps

Informs users that setup map diagrams may not show all associated key text.

TTDJ Setup Menu Navigation

Class B1 and B2 Timer Setup

Configuration options for Class B1 and B2 timers.

Sensor Type and Ignition Delay Setup

Setup menus for sensor input types (SETUP.3) and ignition ground delay (SETUP.4).

Remote Type and Hourmeter Setup

Configuration for remote type (#29) and hourmeter settings.

Tachometer and Speed Limit Setup

Setup menus for pulses per revolution, overspeed, and underspeed.

Modbus Node Address Setup

Configuration menu for setting the Modbus RTU node address.

User Configuration and Calibration

Accessing User Setup Menus

Step-by-step guide on how to enter and navigate the user setup menus.

Pulses/Revolution Configuration

Instructions for setting pulses per revolution for tachometer calibration.

TTDJ-DC-T Tachometer Calibration

Specific guidance for setting pulses per revolution on DC models.

Configuring Sensor Inputs (1-16)

Detailed steps for selecting sensor input types and configuring them.

Elapsed Time Setting and Resetting

Procedure for setting or resetting the elapsed time on the TTDJ.

Code Protection for Setup Menus

Explains the code protection feature and how to enter codes or handle errors.

Tachometer Calibration Procedure

Comprehensive guide for calibrating the tachometer on TTDJ-DC-T and TTDJ-IGN-T models.

Sequence of Operations and Fault Handling

System Start-Up Procedure

Steps to follow for starting the engine after clearing faults.

Engine Speed Display Behavior

How engine speed is displayed in relation to Class 'B' timers (-T models).

Class B Timer Operation

Describes display alternation and lockout during Class 'B1' and 'B2' timer operation.

Elapsed Time Display

How to display and interpret the run hours using the Elapsed Time feature.

Alarm Only Condition Handling

Behavior when a sensor input is configured as alarm-only.

Overspeed and Underspeed Shutdowns

Explains shutdown sequences for overspeed and underspeed conditions.

Manual Stop Operation

Procedure for manually shutting down the engine using the STOP/RUN key.

Ignition Ground Delay Sequence

Details the sequence of tripping the fuel valve and grounding ignition after a delay.

Loss of Ignition Annunciation

How the TTDJ-IGN models annunciate a loss of ignition.

Resetting Shutdown Faults

Procedure to clear a shutdown fault after the condition has been resolved.

Test Timer Operation

Instructions for performing a sensor test using the Test Timer.

Test Mode Display Indicators

Explains the various display indicators seen during test mode operation.

Product Warranty Information

Details on the limited warranty for materials and workmanship.